You can defend someone's right to say something while disagreeing with it, not supporting it, and not wanting to be associated with it. By publishing that blog post, Tor isn't attacking free speech; they are participating in it. As are you, when you respond to them, and I, when I respond to you.
> They decided it's more important to virtue signal
I'm always a bit confused by people using the term "virtue signaling". Do you never try to make ethical decisions in your life? If you do, why is it so hard to believe others are, too?